Global Brain

Founded in Tokyo in 1998, Global Brain is a venture capital firm focusing on seed to late-stage investments across various sectors globally. They have invested in over 300 startups, facilitating 25 IPOs and 61 M&As through hands-on support services.

Kaori Akiba

Director

Hidetaka Aoki

Investment Group Partner and Fellow Chief of Space Lab

Tatsunori Arai

Director

Megumi Asatsuma

Director

Anjani Bansal

Partner / India Office Representative

Past deals in Sustainability

Creatura

Series A in 2025
Creatura assists companies in reducing greenhouse gas emissions by generating and distributing carbon credits and promoting the adoption of renewable energy sources.

Symbiobe

Series A in 2024
Symbiobe is engaged in the development of a resource-recycling material production platform that aims to promote sustainability through the effective utilization of underutilized natural biomass resources and photosynthetic organisms. The company focuses on creating alternatives for greenhouse gas fixation and producing industrial biopolymers, nitrogen fertilizers, and aquaculture feed. By advancing manufacturing processes that prioritize environmental sustainability, Symbiobe supports the transition to a more sustainable society and provides essential resources for environmental start-up businesses seeking natural and sustainable products.

Sagri

Series A in 2024
Sagri, Inc. is a company based in Tamba, Japan, that specializes in developing agriculture software for experienced farmers. Founded in 2016, Sagri focuses on creating a data platform that addresses agricultural challenges through the use of satellite data and machine learning. This innovative platform enables users to analyze the status of agricultural land in their regions, collaborating with local governments and financial institutions. By providing digital mapping of abandoned cultivated land, Sagri aids agricultural committees in reducing the burden of land investigations and enhancing overall agricultural management.

CleanFiber

Venture Round in 2024
CleanFiber, LLC is a manufacturer of cellulose insulation materials designed for use in attics, walls, and floors of both residential and commercial buildings. Founded in 2013 and headquartered in Blasdell, New York, with an additional office in Buffalo, the company specializes in producing high-performance, carbon-negative insulation from recycled corrugated cardboard. This innovative approach not only promotes sustainability but also enables construction companies to build fire-resistant structures while maintaining cost competitiveness. CleanFiber has transitioned from its former name, UltraCell Insulation, LLC, in September 2018, and is currently focused on rapidly scaling up production to meet growing demand in the insulation market.

Windfall Bio

Series A in 2024
Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.

Elephantech

Series D in 2023
Founded in Tokyo, Japan in 2014, Elephantech specializes in the manufacturing of electronic circuits. The company's innovative metal inkjet printing technology enables it to produce flexible printed circuit boards sustainably.

Biome

Series B in 2023
Biome is a prominent company specializing in image analysis technology, collaborating with the IchiJoho System at Kyoto University. The company has developed a biological information application aimed at promoting biodiversity conservation and creating a profitable society. Its application focuses on remote surveying of living organisms, offering expertise in data analysis and database management. This enables clients to efficiently access essential ecological information, supporting efforts in environmental preservation and sustainable practices.

WasteX

Venture Round in 2023
WasteX operates as an environmental solutions provider for agriculture and industry sectors. It develops and implements end-to-end systems on client farms and facilities, transforming agricultural waste into biochar. This process enhances soil health, boosts operational efficiency, generates additional revenue streams, and significantly reduces clients' carbon footprints.

Connect Earth

Seed Round in 2023
Founded in 2021, Connect Earth is a London-based environmental data company that democratizes access to sustainability data. It offers a carbon tracking API technology to empower individuals and institutions to make sustainable choices by providing transparent insights into the climate impact of daily spending.

Cierpa & Company

Venture Round in 2023
Cierpa & Company develops environmental, social, and governance ESG management software. The cloud-based platform centralizes ESG information, enables cross-department information sharing, and optimizes workflows. It analyzes data to improve ESG scores and supports the collection, analysis, and disclosure of sustainability information for transparent management.

Visolis

Seed Round in 2023
Visolis is a bioengineering company based in Berkeley, California, that specializes in the development of carbon-negative and sustainable chemicals. Established in 2012, the company employs a systems approach that combines innovations in synthetic biology, chemical catalysis, and process scale-up to create new bio-based manufacturing platforms. Visolis' technology enables the production of chemicals for performance polymers, which can be seamlessly integrated into existing fuels such as gasoline, diesel, and jet fuel through straightforward and cost-effective chemical transformations. The company's focus on achieving true carbon-negative chemical synthesis positions it as a leader in sustainable chemical manufacturing.

CleanFiber

Series B in 2023
CleanFiber, LLC is a manufacturer of cellulose insulation materials designed for use in attics, walls, and floors of both residential and commercial buildings. Founded in 2013 and headquartered in Blasdell, New York, with an additional office in Buffalo, the company specializes in producing high-performance, carbon-negative insulation from recycled corrugated cardboard. This innovative approach not only promotes sustainability but also enables construction companies to build fire-resistant structures while maintaining cost competitiveness. CleanFiber has transitioned from its former name, UltraCell Insulation, LLC, in September 2018, and is currently focused on rapidly scaling up production to meet growing demand in the insulation market.

Neutral

Series A in 2022
Neutral is a carbon-neutral food company building a sustainable carbon-neutral food ecosystem, starting with dairy products such as milk and half-and-half. Founded in 2018 and based in Portland, Oregon, the company seeks to reduce the carbon footprint of the food system by producing dairy and meat products through carbon-neutral processes, including organic milk from pasture-raised cows. The portfolio emphasizes nutritional quality, with products that deliver omega-3 and conjugated linoleic acid, aiming to offer healthier dairy and meat options while advancing greener emissions reductions.

AmicaTerra

Series C in 2022
AmicaTerra is a supplier and manufacturer of biomass products aimed at addressing environmental pollution. The company specializes in creating plant-derived, biodegradable fiber ceramic products, including tableware and straws. These items are designed to decompose naturally without releasing toxic chemicals, providing consumers with eco-friendly alternatives to traditional plastic cutlery. By focusing on sustainability, AmicaTerra contributes to reducing waste and promoting a healthier environment.

SANU

Series A in 2022
SANU operates a subscription-based platform offering access to second homes and residences in natural environments. It aims to promote sustainable coexistence between people and nature by providing subscribers with regular opportunities to enjoy nature as an extension of their urban lifestyle.

Social Interior

Series B in 2020
Social Interior operates a furniture subscription platform that enables customers to rent a range of furniture and home appliances for a defined period. Through its online platform, users can select items such as chairs, tables, storage units, sofas, and TV stands, and arrange delivery and return. The service covers planning, development, and operation of the subscription model and emphasizes sustainable use of furniture through reuse and rental to support environmental goals.

Manebi

Venture Round in 2020
Manebi specializes in the production and distribution of handmade espadrilles, a traditional Spanish footwear. The company employs skilled craftsmen to create these shoes using natural jute, which is known for its durability and sustainability. To enhance the longevity of its products, Manebi incorporates a thin rubber layer that protects the jute from humidity and water contact. This focus on quality and craftsmanship allows the brand to offer fashionable and reliable footwear and beachwear accessories, appealing to customers seeking both style and functionality.

Lime

Series C in 2019
Lime operates a smart mobility fleet comprising electric scooters and pedal bikes, aiming to provide sustainable first- and last-mile transportation solutions. The company partners with cities worldwide to offer affordable, convenient, and eco-friendly travel alternatives.

PERL.eco

Venture Round in 2018
PERL.eco is developing a blockchain-based platform dedicated to real-world ecological assets. It aims to tokenize carbon credits and biodiversity, facilitating their trade via decentralized finance (DeFi) mechanisms.

Material Concept

Corporate Round in 2016
Material Concept specializes in the manufacturing of copper paste designed for electrical components and solar panels. Its product offers comparable conductivity to silver at a significantly lower cost, making it an attractive alternative for industries seeking to reduce raw material expenses.

SANU

SANU operates a subscription-based platform offering access to second homes and residences in natural environments. It aims to promote sustainable coexistence between people and nature by providing subscribers with regular opportunities to enjoy nature as an extension of their urban lifestyle.

SUN METALON

SUN METALON specializes in decarbonizing metal manufacturing by offering innovative technology for recycling, refining, and forming metals. Its core innovation lies in efficient heating of metal scraps and chips, reducing energy consumption and impurities, thereby significantly lowering CO₂ emissions compared to traditional methods.
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